The City may require a user of sewer services to provide information
needed to determine compliance with this chapter. This information
may include:
A. Wastewater discharge average and peak flow rate and/or volume over
a specified time period.
B. Chemical analyses of wastewaters. All measurements, tests, and analyses
of the characteristics of waters and wastes to which reference is
made in this chapter shall be determined by a laboratory, approved
for the respective test parameter, in accordance with approved methodologies
and procedures as published in Ch. NR 219, Wis. Adm. Code, and registered
with the State of Wisconsin.
C. Information on raw materials, processes and products affecting wastewater
volume and quality.
D. Quantity and disposition of specific liquid, sludge, oil, solvent
or other materials important to sewer use control.
E. A plot plan of sewers for the user's property showing sewer and pretreatment
facility location.
F. Details of wastewater pretreatment facilities.
G. Details of systems to prevent and control the losses of materials
through spills to the municipal sewer.
No person shall discharge or cause to be discharged any stormwater,
surface water, groundwater, roof runoff, subsurface drainage, noncontact
cooling water or clear water to any sanitary sewer. Roof leaders,
swimming pool drains, surface drains, groundwater drains, sump pumps,
foundation footing drains, and other clear water drains shall be connected
wherever possible with a storm sewer or to a natural outlet approved
by the Department and other regulatory agencies. They shall not be
connected to a building sewer that discharges into a sanitary sewer
or private wastewater treatment plant. All such connections existing
at the time of passage of this article shall thereafter be illegal.
If stormwater or clear water is being discharged into a sanitary sewer,
the Department shall give the offending person 30 days' notice to
disconnect. Failure to disconnect after such notice shall authorize
the Department to cause disconnection and assessment of the costs
of such disconnection against the property involved. In alternative,
the Department may institute action for violation of this section.
No person shall discharge or cause to be discharged into the
sewerage system any of the following described waters or wastes:
A. Gasoline, benzene, naphtha, fuel oil or any other flammable or explosive
substance that may create a fire or explosion hazard in the wastewater
facilities.
B. Any discharge containing toxic or poisonous solids, liquids or gases
in sufficient quantity, either singly or by interaction with other
wastes, to injure or interfere with any wastewater treatment process,
constitute a hazard to humans, flora or fauna, create a public nuisance,
or create any hazard in the receiving waters of the wastewater treatment
plant. The toxins prohibited shall include but not be limited to those
published under § NR 215.03, Wis. Adm. Code.
C. Solid or viscous substances in quantities or of such size capable
of causing obstruction to the flow in sewers, or other interference
with the proper operation of the wastewater facilities, such as, but
not limited to, ashes, bones, cinders, sand, mud, straw, shavings,
metal, glass, rags, feathers, tar, plastics, wood, unshredded garbage,
whole blood, paunch manure, hair and fleshings, entrails and paper
dishes, cups, milk containers, sanitary napkins, etc., either whole
or ground by garbage grinders.
D. Any wastewater containing floatable oil.
E. Wastes that cause or are capable of causing, either alone or in combination
with other substances, air pollution as defined in § 285.01(3),
Wis. Stats., as amended from time to time, and any regulation and/or
orders of any regulatory agency issued there under.
F. Discharges that prevent effective operation and maintenance of the
wastewater facilities.
G. Any waste that presents a detrimental environmental effect, a nuisance,
or any condition unacceptable to any public agency having regulatory
jurisdiction.
H. Any wastewater that contains organosulfur or organophosphate pesticides,
herbicides or fertilizers.
I. Any waste which, in combination with other discharges, causes:
(1) The wastewater treatment plant's effluent to exceed 0.1 mg/L total
phenols; or
(2) The wastewater treatment plant's effluent to exceed 0.002 mg/L polychlorinated
biphenols (PCBs); or
(3) The wastewater treatment plant's digested sludge to exceed a PCB
concentration of 10.0 milligrams/kilogram on a dry-weight basis.
J. Industrial discharges that exceed the applicable categorical pretreatment
standard, pursuant to Ch. NR 211, Wis. Adm. Code.
K. Wastes prohibited by § NR 211.10, Wis. Adm. Code.
The following described substances, materials, waters, or waste
shall be limited in discharges to concentrations or quantities which
will not harm either the sewers, wastewater treatment process or equipment,
will not have an adverse effect on the receiving stream, will not
result in violation of the City's WPDES permit, or will not otherwise
endanger lives, limb, public property, or constitute a nuisance. The
Department may set limitations more stringent than those established
below if, in its opinion, more severe limitations are necessary to
meet the above objectives. The following limitations or restrictions
on materials or characteristics of waste or wastewaters discharged
to the sanitary sewer shall not be violated without prior approval
of the Department:
A. Wastewater having a temperature higher than 150° F. (65°
C.), or any wastewater having a temperature which may inhibit biological
activity in the wastewater treatment plant, thereby resulting in interference.
B. Any waters or wastes having a pH lower than 5.5 or higher than 10.0,
or having any other corrosive property capable of causing damage or
hazard to the wastewater facilities or personnel.
C. Wastewater containing more than 25 milligrams per liter of petroleum
oil, nonbiodegradable cutting oils or products of mineral-oil origin.
D. Wastewater containing more than 300 milligrams per liter of oils,
fat, grease, wax, or any other similar substances of animal or vegetable
origin.
E. Wastewater which contains in excess of (note: actual numbers not
reviewed):
2.0 mg/L cadmium
|
0.0005 mg/L mercury
|
3.6 mg/L hexavalent chromium
|
6.7 mg/L nickel
|
21.8 mg/L total chromium
|
1.0 mg/L selenium
|
17.6 mg/L copper
|
0.1 mg/L silver
|
1.2 mg/L cyanide
|
16.5 mg/L zinc
|
1.5 mg/L lead
|
1.0 mg/L aluminum
|
F. Radioactive wastes which, alone or with other wastes, results in
releases greater than those specified by current United States Bureau
of Standards handbooks, or which violate rules or regulations of any
applicable regulatory agency.
G. Quantities of flow, concentrations, or both, which constitute a slug,
as defined herein.
H. Waters or wastes containing substances which are not amenable to
treatment or reduction by the wastewater treatment processes employed,
or are amenable to treatment only to such degree that the wastewater
treatment plant effluent cannot meet the requirements of other agencies
having jurisdiction over discharge to the receiving waters.
I. Any water or wastes which, either singly or by interaction with other
water or wastes in the public sewer system, release obnoxious gases,
form suspended solids which interfere with the collection system,
create a public nuisance or hazard to life, are sufficient to prevent
entry into the sewers for their maintenance or repair, or create a
condition deleterious to structures and treatment processes.
If any waters or wastes are discharged or are proposed to be
discharged to the public sewers which contain the substances or possess
the characteristics enumerated herein, and which in the judgment of
the City may have a deleterious effect upon the wastewater facilities,
processes, equipment, or receiving waters, or which otherwise create
a hazard to life or constitute a public nuisance, the City may:
A. Reject the wastes; the City reserves the right to reject admission
to the system of any waste harmful to the treatment or collection
facilities or to the receiving stream;
B. Require pretreatment to an acceptable condition for discharge to
the public sewers;
C. Require control over the quantities and/or rates of discharge; and/or
D. Require payment to cover the additional cost of handling and treating
the wastes not covered by existing user charges under the provisions
of this article.
Garbage grinders may be connected to sanitary sewers from homes,
hotels, institutions, restaurants, hospitals, catering establishments
or similar places where garbage originates from the preparation of
food in kitchens for the purpose of consumption on the premises or
when served by caterers, where the garbage has been properly shredded.
Any nonresidential user who accidentally discharges into the
sewerage system wastes or wastewater prohibited under these regulations
shall immediately report such discharge to the Department. Such report
shall describe the location, time, volume and type of waste or wastewater
discharged. Within 15 days of such discharge, a detailed written statement
describing the cause of the discharge and measures taken to prevent
future occurrences shall be submitted to the Department. Such reporting
shall not relieve the person causing the accidental discharge from
any penalties imposed by these regulations.